Question about Broadcom BCM5721 NetXtreme Ethernet Controller for Servers

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NETWORK CONNECTION ON PC

To work locally on my computer, I generally "disable" the "Network Enable" (LAN) icon on my desktop, just in case, when I no longer need to be connected to the internet. I have a recent problem where the computer is restarting everytime I try to "enable" the LAN icon. The NIC card is fine as it shows up in the devices. The driver seems fine. I have a McAfee AV product installed, so I do not doubt any viruses (however, can't discount any!). Would need some assistance on this, soonest. Thanks.

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  • Jason M May 11, 2010

    Click Start -> Run and type

    eventvwr

    Click okay. When the Event Viewer comes up, click Application. Do you see any events correlating to the time you try to enable the NIC? Check out the System section as well.


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Install operating again some files has been missing

Posted on Jan 30, 2009

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Belkin Surf Network Adapter installed on my desktop connects to my wireless network and looks to be working ie. wireless icon in lower right hand corner is flashing blue with no red cross etc. However, I...


Hi,
I got your issue , for your issue , I f you want to go online hard wired to the router , make sure the Local are connection in the comp is enabled as well you have coted that u can see red cross in the wireless network connection icon, so make sure do not have any preferred networks in the comp.

Thanks,
Prema

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Compaq presario v3000


Unless you are purchasing an old desktop PC, I am pretty sure any system you purchase these days (whether it's from Dell or whatever) have atleast an integrated LAN Rj45 connection on the motherboard.

The cheapest computer on dell.com (the Inspiron) has an integrated LAN connection for example.

Hope this helps,
Bill

Sep 04, 2009 | Compaq Network adapter

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Local Area Connection is Now Connected, BUT DC


You Say: " The lan cables are having no problem at all and also the modem and the router. There are no problems there at all. It's just troublesome whenever this box pops up"

If you want to disable this from popping up, just click the connection icon in "network connections" , "properties" , and unclick " Notify me when this connection has limited or no connectivity".

But I think you have a real issue causing this and I would go into the propertirs for your network adapter and remove EVERYTHING, reboot, and put it all back in. Make sure you look at all the properties under TCP/IP etc. and set it all back the same as it was.

This will essentially reinstall ALL your networking componants back to Brand Mew!

If you have problems after this, you have a stting wrong somewhere or a hardware issue.

GL!

Aug 23, 2009 | Computers & Internet

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I HAVE A BUILT-IN NETWORK ADAPTER IN MY COMPUTER FUJITSU, M0DEL FMV 6000CX2 HOW CAN I INSTALL IT AND MAKE IT WORK.


Normally it is automatic enable.
U can see a local network connection (LAN) icon appear under network connection. The icon will show u unplugged if u did not connect to any network or devices.

If u did not see the LAN icon, then u need to check under device manager whether there is any missing driver.

Mar 10, 2009 | Computers & Internet

1 Answer

Network port problem


on desktop
right click My Computer
Manage > Device Management >

expand
Network adaptors > If it is correct and enabled no mark will be there
for driver It would have Yellow Explanation on its icon
Choose it properties to view problem and possible cause

if its shown in
My network Places >properties
Driver is generally ok
choose lan >properties >on general tab > tcp/ip > properties >
obtain ip automatically

or as provided by your ISP(internet service provider)
also check the utp/STP cable you are using
if its loose it won't work


also
check with your ISP
if your account is active
and that you filled the correct username and password
in configuration of your adsl

regards
-Mayank

Nov 29, 2008 | Computers & Internet

1 Answer

Lan Network Problems


Hello: What I would say is: go to microsoft update and make sure you have all the updates for your OS.

Then; read the posting (below) from someone who had the same issue:
=============================================
stacemarie wrote: "XP SP 3 updates some networking sharing system LAN files that cause some configurations to become unaccessable on the workgrouped networks. We cannot - even ping - the network addresses after installing - so it was an uninstall and do a system restore to get to the original good working state of the clients.

Microsoft needs to come up with a patch to fix this as we are seeing more and more networked clients having these connection and sharing problems."
=================
Do you understand the above?

Let me know if you do not know how to unistall SP3 and do a Restore...

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Lan card disabled


When u plug the ethernet CAT cable in the LAN card socket , so you see any light orange or green flashing on the LAN card itself.
If yes then right click on my computer >> properties >> Hardware >> device manager>> check in network adapters whether the LAN card is enabled or not
If NO the right click on it and enable it check whether it is able to receive any ip address


If u see no light at all
Then you might have to install a new LAN card on the system

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Belkin mimo G network card


Hi,

I think in your Pc Wireless lancard is disable,Pls enable the wireless lancard,

1. just check the lan card is enbled
example:my network place --right click---properties---wireless lan card,

2. check the R u getting ip address,
example: start---run---cmd----ipconfig

May 20, 2008 | Belkin Dual-Band Wireless A+G Desktop...

1 Answer

IT DOESNT WORK OUT


Sounds like your wireless is disabled.

If your using windows xp, check the following.
Go to your start menu
go to your control panel (might be under settings, might not.)
from control panel, if it says "Choose a Category" click switch to classic view.
open your Network Connections Icon.
If "Wireless Network Connection" is grayed out, right click it and choose, "Enable."

In Windows Vista
Go to the bottom right hand corner of your screen to the icons.
Right click on the double monitors (network connection)
Select Network and Sharing Center
Click on Open Network Connections
If "Wireless Network Connections:" is grayed out, right click it and choose, "Enable."

If it is enabled, and you already have wireless built in to your laptop, then it's possible the wrong wireless card is enabled. If this is the case, when you open your network connections, you will have two Wireless Network Connection Icons.
A Wireless Network Connection, and a Wireless Network Connection 2. Make sure 2 is enabled, and the first one without a number is disabled.

Let me know if this helps.

Mar 17, 2008 | Linksys WPC54G Wireless-G Notebook Adapter...

3 Answers

My laptop cannot connect to my local network (LAN)


Assuming you initially set up the router using the wired lan adapter and lead, enabled DHCP in the settings. First stand right next to your router; Dells wireless is a little tempremental, go to control panel and in there should be Dell wireless monitor, open this up refresh it and see if it finds any wireless networks, if so try to connect. Dissable your wired network lan adapter. Go to the properties of your wireless card and on the TCP/IP line click properties again and ensure that obtain an ip address automatically is selected, press ok and restart the pc.

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